强激光与粒子束 Pub Date : 2021-08-15 DOI: 10.11884/HPLPB202133.210167

Ke Xizheng, Yang Shangjun, Wu Jiali, Zhong Xirui

引用次数: 4

Magnetic axis measurement of the high precision coil for the High Intensity heavy-ion Accelerator Facility electron cooler 高强度重离子加速器设备电子冷却器高精度线圈的磁轴测量

强激光与粒子束 Pub Date : 2021-08-15 DOI: 10.11884/HPLPB202133.210073

Shao Xiaoping, M. Lijun, Lu Haijiao, Yang Xiao-Dong, Yang Yanbing, Tang Meitang, Zhao Lixia, Ma Fu, Ma Xiaoming, Li Jie, He Lun, Sun Xiaolong

{"title":"Magnetic axis measurement of the high precision coil for the High Intensity heavy-ion Accelerator Facility electron cooler","authors":"Shao Xiaoping, M. Lijun, Lu Haijiao, Yang Xiao-Dong, Yang Yanbing, Tang Meitang, Zhao Lixia, Ma Fu, Ma Xiaoming, Li Jie, He Lun, Sun Xiaolong","doi":"10.11884/HPLPB202133.210073","DOIUrl":"https://doi.org/10.11884/HPLPB202133.210073","url":null,"abstract":"Electron cooling method is used for the High Intensity heavy-ion Accelerator Facility (HIAF), in order to reduce the beam emittance and momentum spread of heavy ion beams, hence to improve the accuracy and luminosity of nuclear physics and atomic physics experiments. The magnetic field homogeneity of the cooling section is the key parameter related to the cooling effect. A new type of cooling section solenoid composed of several coils was used in the HIAF electron cooling device to produce a high parallelism magnetic field. In this paper, a device for the magnetic field axis measurement of high-precision coils is presented. The geometric symmetrical axis of the coil is measured by a positioning device. The radial and axial magnetic field distribution in the center plane of the coil is measured by the rotating Hall probes. Finally, the relative angle between the coil magnetic field axis and the geometric symmetrical axis is calculated by the measurement results. The accuracy of the measured angle is within ±0.10 mrad. The measured angle of the prototype coil is (1.28±0.10) mrad, which satisfies the physics requirement.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"33 1","pages":"084001-1-084001-9"},"PeriodicalIF":0.0,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49224167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Saturn Accelerator Recapitalization Project. 土星加速器资本重组项目。

强激光与粒子束 Pub Date : 2021-08-01 DOI: 10.2172/1883041

Bryan Oliver, Jonathan Douglass, M. Mazarakis, Mark Savage, K. Struve, B. Ulmen

引用次数: 0

Numerical analysis of plasma and shock wave characteristics of the discharge in liquid 液体放电等离子体和冲击波特性的数值分析

强激光与粒子束 Pub Date : 2021-07-15 DOI: 10.11884/HPLPB202133.200321

Yu Qing, Z. Hui, M. Danni

{"title":"Numerical analysis of plasma and shock wave characteristics of the discharge in liquid","authors":"Yu Qing, Z. Hui, M. Danni","doi":"10.11884/HPLPB202133.200321","DOIUrl":"https://doi.org/10.11884/HPLPB202133.200321","url":null,"abstract":"Based on conservation equation of energy, channel characteristics of the cylindrical geometry of the plasma were described under different conductivity models. The variation of the channel radius, temperature, resistance, current and dissipated energy with time is obtained. The variation of shock wave pressure at a certain distance from the center of the discharge gap is also given. The results are compared with those calculated based on the spherical geometry of the plasma channel. The purpose of this paper is to provide a reference for further study of physical and chemical characteristics and shock wave characteristics of the discharge in liquid. The results show that there is significant difference in the channel pressure and radius when the plasma channel is respectively regarded as a sphere and a cylinder, but there is little difference in other physical properties. When the physical characteristics except the shock wave characteristic are described by using three conductivity models, the change trend is almost the same, while the shock wave characteristic is described more accurately by using the conductivity model σ2. By comparing the changes of electrical parameters and pressure parameters, the applicability of the model can be selected according to the experimental data or specific research problems, which also provides a reference for further study of the physicochemical characteristics and shock wave characteristics of discharge plasma in liquid.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"33 1","pages":"075001-1-075001-7"},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49135212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Noncollinear matched broadband third-harmonic generation based on angular dispersion 基于角色散的非共线匹配宽带三次谐波产生

强激光与粒子束 Pub Date : 2021-07-15 DOI: 10.11884/HPLPB202133.210074

Mao Shuoyu, Feng Bin, L. Ping, Chai Xiangxu, Wang Liquan, Wang Guanzhong, Jing Yukun

引用次数: 0

5 kW oscillating-amplifying integrated fiber laser with high reliability 5kw高可靠性振荡放大集成光纤激光器

强激光与粒子束 Pub Date : 2021-07-15 DOI: 10.11884/HPLPB202133.210245

Xi Xiaoming, Zeng Lingfa, Zhang Hanwei, W. Peng, Yang Baolai, Wang Xiao-lin, X. Xiaojun

引用次数: 0

Design and implementation of module fault interlock and protection system of HIAF-BRing power supply prototype HIAF-BRing电源样机模块故障联锁保护系统的设计与实现

强激光与粒子束 Pub Date : 2021-07-15 DOI: 10.11884/HPLPB202133.210034

T.D. Yulian, Wu Fengjun, W. Xiaojun, Yan Hongbin, Huang Yuzhen, Lin Yuhang, Li Jiqiang, Zhang Shuai, Zhang Huajian, Zhuang Fangfang, Gao Daqing

{"title":"Design and implementation of module fault interlock and protection system of HIAF-BRing power supply prototype","authors":"T.D. Yulian, Wu Fengjun, W. Xiaojun, Yan Hongbin, Huang Yuzhen, Lin Yuhang, Li Jiqiang, Zhang Shuai, Zhang Huajian, Zhuang Fangfang, Gao Daqing","doi":"10.11884/HPLPB202133.210034","DOIUrl":"https://doi.org/10.11884/HPLPB202133.210034","url":null,"abstract":"Power supply prototype in High Intensity heavy ion Accelerator Facility-Booster Ring (HIAF-BRing) adopts the scheme of full energy and fast cycle storage pulse power supply topology. Its multi modules are connected in series and parallel pattern, and the power reaches megawatt level. Due to the high power and large scale of the power supply, a module fault interlock protection system based on Programmable Logic Controller (PLC), interlock boards and Field Programmable Gate Array (FPGA) is designed and implemented to protect the power supply in operation. In this paper, first, a design of double redundant module fault interlock is introduced. Second, the logic implemented in PLC is described. Third, the work about FPGA is given. Finally, the system is tested in three aspects: the responsive time of the power supply interlock loop, the total time from controller error occurrence to interlock finish, and the equipment fault response. The result shows that the module fault interlock system can action sensitively, timely and reliably in case of fault occurrence, which meets the requirements of the power supply prototype in HIAF-BRing.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"33 1","pages":"074002-1-074002-9"},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46560362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micro-focus computed tomography for turbine blade based on all-optical bremsstrahlung source 基于全光韧致辐射源的涡轮叶片微聚焦计算机断层扫描

强激光与粒子束 Pub Date : 2021-07-15 DOI: 10.11884/HPLPB202133.210201

Guo Bo, Liu Dexiang, Wu Shuanghua, Ma Yue, Hu Jianfei, Lu Wei

{"title":"Micro-focus computed tomography for turbine blade based on all-optical bremsstrahlung source","authors":"Guo Bo, Liu Dexiang, Wu Shuanghua, Ma Yue, Hu Jianfei, Lu Wei","doi":"10.11884/HPLPB202133.210201","DOIUrl":"https://doi.org/10.11884/HPLPB202133.210201","url":null,"abstract":"Computed tomography is a major technique for nondestructive detection of internal defects of dense materials and large-size devices. It is widely used in material science, railway, aerospace, national defense, military industry and other industries. At present, conventional high-energy industrial computed tomography system uses the X-ray source based on traditional thermionic RF electron gun, which can only provide millimeter source size, thus limiting its imaging spatial resolution. A high-energy micro-focus X-ray source is the key means to realize high-resolution high-energy industry computed tomography. As an emerging accelerator technology, the laser wakefield accelerator is a promising candidate for the micro-focus high-energy industrial computed tomography. This article reports experimental results of a micro-focus X-ray source based on laser wakefield acceleration and a computed tomography for a turbine blade. Using a 20 TW Ti: sapphire laser system, an electron beam with a charge of (140±44) pC is generated through ionization-induced injection, and then an all-optical bremsstrahlung X-ray source with an accumulated source size of 25 μm is obtained by using a 1.5 mm tungsten target. Using this source, a preliminary compressed-sensing-based computed tomography for a turbine blade is performed.","PeriodicalId":39871,"journal":{"name":"强激光与粒子束","volume":"33 1","pages":"074001-1-074001-4"},"PeriodicalIF":0.0,"publicationDate":"2021-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41398542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on theoretical model of bulk current injection replacing radiation about shielded two-core wire 屏蔽双芯线大电流注入替代辐射的理论模型研究

强激光与粒子束 Pub Date : 2021-07-15 DOI: 10.11884/HPLPB202133.200354

Sun Jiangning, Pan Xiaodong, L. Xinfu, Wan Haojiang, Wei Guanghui

引用次数: 0

2.5-D discontinuous Galerkin time-domain method for Maxwell equations Maxwell方程的2.5-D间断Galerkin时域方法

强激光与粒子束 Pub Date : 2021-07-01 DOI: 10.11884/HPLPB202133.210056

Hou Yiran, Wang Yu-heng, Wang Xianghui, Zhan Jie, Qi Hongxin

引用次数: 0

强激光与粒子束最新文献